spandsp
0.0.6
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Typedefs | |
typedef struct fax_modems_state_s | fax_modems_state_t |
Functions | |
const char * | fax_modem_to_str (int modem) |
Convert a FAX modem type to a short text description. More... | |
SPAN_DECLARE_NONSTD (int) fax_modems_v17_v21_rx(void *user_data | |
Get the next bit of a transmitted serial bit stream. More... | |
SPAN_DECLARE_NONSTD (void) fax_modems_hdlc_tx_frame(void *user_data | |
void | fax_modems_start_rx_modem (fax_modems_state_t *s, int which) |
void | fax_modems_set_tep_mode (fax_modems_state_t *s, int use_tep) |
int | fax_modems_restart (fax_modems_state_t *s) |
logging_state_t * | fax_modems_get_logging_state (fax_modems_state_t *s) |
Get a pointer to the logging context associated with a FAX modems context. More... | |
fax_modems_state_t * | fax_modems_init (fax_modems_state_t *s, int use_tep, hdlc_frame_handler_t hdlc_accept, hdlc_underflow_handler_t hdlc_tx_underflow, put_bit_func_t non_ecm_put_bit, get_bit_func_t non_ecm_get_bit, tone_report_func_t tone_callback, void *user_data) |
int | fax_modems_release (fax_modems_state_t *s) |
int | fax_modems_free (fax_modems_state_t *s) |
Variables | |
const int16_t | amp [] |
const int16_t int | len |
const uint8_t * | msg |
typedef struct fax_modems_state_s fax_modems_state_t |
The set of modems needed for FAX, plus the auxilliary stuff, like tone generation.
const char* fax_modem_to_str | ( | int | modem | ) |
Convert a FAX modem type to a short text description.
Convert a FAX modem type to a short text description.
modem | The modem code. |
logging_state_t* fax_modems_get_logging_state | ( | fax_modems_state_t * | s | ) |
Get a pointer to the logging context associated with a FAX modems context.
Get a pointer to the logging context associated with a FAX modems context.
s | The FAX modems context. |
References fax_modems_state_s::logging.
SPAN_DECLARE_NONSTD | ( | int | ) |
Get the next bit of a transmitted serial bit stream.
Get the next bit of data from a T.38 rate adapting non-ECM buffer context.
Get a bit of received non-ECM image data.
Process a block of received V.8 audio samples.
Fake processing of a missing block of received V.29 modem audio samples.
Fake processing of a missing block of received V.27ter modem audio samples.
Generate a block of V.22bis modem audio samples.
Fake processing of a missing block of received V.22bis modem audio samples.
Process a block of received V.18 audio samples.
Fake processing of a missing block of received V.17 modem audio samples.
Generate a block of FAX audio samples.
Apply fake received audio processing.
Process a received T.38 IFP packet from a reliable stream (e.g. TCP).
Generate a block of T.31 modem audio samples.
Fake processing of a missing block of received T.31 modem audio samples.
Dummy receive fillin callback.
Dummy receive callback.
Process a block of samples through an instance of the modem connect tones detector.
Get the next sequence of bytes for transmission.
Get the next byte for transmission.
Fake processing of a missing block of received FSK modem audio samples.
Process a block of received FSK modem audio samples.
Apply T.30 transmit processing to generate a block of audio samples.
Apply fake T.30 receive processing.
Get the next bit of a transmitted serial bit stream.
user_data | An opaque point which must point to a transmitter context. |
Apply fake T.30 receive processing when a block of audio samples is missing (e.g due to packet loss).
s | The FAX context. |
len | The number of samples to fake. |
Apply T.30 transmit processing to generate a block of audio samples.
s | The FAX context. |
amp | The audio sample buffer. |
max_len | The number of samples to be generated. |
Process a block of received FSK modem audio samples.
s | The modem context. |
amp | The audio sample buffer. |
len | The number of samples in the buffer. |
Fake processing of a missing block of received FSK modem audio samples (e.g due to packet loss).
s | The modem context. |
len | The number of samples to fake. |
s | A pointer to an HDLC transmitter context. |
s | A pointer to an HDLC transmitter context. |
buf | The buffer for the data. |
max_len | The number of bytes to get. |
s | The context. |
amp | An array of signal samples. |
len | The number of samples in the array. |
A dummy routine to use as a receive callback, when we aren't really trying to process what is received. It just absorbs and ignores the data.
user_data | The context. |
amp | The signal.buffer |
len | The length of the signal buffer |
A dummy routine to use as a receive fillin callback, when we aren't really trying to process what is received. It just absorbs and ignores the request.
user_data | The context. |
len | The length of the signal buffer |
Fake processing of a missing block of received T.31 modem audio samples (e.g due to packet loss).
s | The T.31 modem context. |
len | The number of samples to fake. |
Generate a block of T.31 modem audio samples.
s | The T.31 modem context. |
amp | The audio sample buffer. |
max_len | The number of samples to be generated. |
s | The T.38 context. |
buf | The packet contents. |
len | The length of the packet contents. |
seq_no | The packet sequence number, used for logging purposes. |
Apply fake processing when a block of audio samples is missing (e.g due to packet loss).
s | The T.38 context. |
len | The number of samples to fake. |
Generate a block of FAX audio samples.
s | The T.38 context. |
amp | The audio sample buffer. |
max_len | The number of samples to be generated. |
Fake processing of a missing block of received V.17 modem audio samples. (e.g due to packet loss).
s | The modem context. |
len | The number of samples to fake. |
Process a block of received V.18 audio samples.
s | The V.18 context. |
amp | The audio sample buffer. |
len | The number of samples in the buffer. |
Fake processing of a missing block of received V.22bis modem audio samples. (e.g due to packet loss).
s | The modem context. |
len | The number of samples to fake. |
Generate a block of V.22bis modem audio samples.
s | The modem context. |
amp | The audio sample buffer. |
len | The number of samples to be generated. |
Fake processing of a missing block of received V.27ter modem audio samples. (e.g due to packet loss).
s | The modem context. |
len | The number of samples to fake. |
Fake processing of a missing block of received V.29 modem audio samples. (e.g due to packet loss).
s | The modem context. |
len | The number of samples to fake. |
Process a block of received V.8 audio samples.
s | The V.8 context. |
amp | The audio sample buffer. |
len | The number of samples in the buffer. |
Get the next bit of a transmitted serial bit stream.
Apply T.30 transmit processing to generate a block of audio samples.
Apply fake T.30 receive processing.
Apply T.30 receive processing to a block of audio samples.
s | The FAX context. |
amp | The audio sample buffer. |
len | The number of samples in the buffer. |
Apply fake T.30 receive processing when a block of audio samples is missing (e.g due to packet loss).
s | The FAX context. |
len | The number of samples to fake. |
Apply T.30 transmit processing to generate a block of audio samples.
s | The FAX context. |
amp | The audio sample buffer. |
max_len | The number of samples to be generated. |